Seminarium "Teoria cząstek elementarnych i kosmologia"

I will describe a construction of the quantum stress-energy tensor for a free scalar field on a curved background. There exist various versions, not all completely satisfactory. Situation is even more interesting on the FRW background where additionally mode summation can be used. The mode summation method and the methods for general spacetimes do not have much relation on a first sight. However, this impression is misleading.

slides: https://mycloud.fuw.edu.pl/index.php/s/cEBpzaJi6oejeLE